ASP.NET Core WEB API 使用element-ui文件上传组件el-upload执行手动文件文件，并在文件上传后清空文件

<template>
  <div>
     <el-dialog title="数据导入" :visible.sync="dialogVisible" width="30%" :before-close="handleClose">
      <el-upload
        class="upload-demo"
        ref="upload"
        :action="actionRequestUrl"
        :on-preview="handlePreview"
        :on-remove="handleRemove"
        :on-success="fileUploadSuccess"
        :on-error="fileUploadFail"
        :on-change="fileChange"
        :file-list="fileList"
        :limit="1"
        :auto-upload="false"
        :headers="headers">
        <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
        <el-button size="small" @click="downloadTemplate">导入模板下载</el-button>
        <div slot="tip" class="el-upload__tip">请按照导入模板中的数据格式导入</div>
      </el-upload>
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <!-- <el-button type="primary" @click="dialogVisible = false">确 定</el-button> -->
        <el-button style="margin-left: 10px;" type="success" @click="submitUpload">数据导入</el-button>
        <!-- <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div> -->
      </span>
    </el-dialog>
  </div>
</template>

<script>
 data() {
    return {
      fileList: [], //文件列表
      dialogVisible: false,//Dialog显示状态
      headers: { "X-Token": jwtToken }//设置上传的请求头部
      fileDownloadUrl：'www.xxxx.com',//文件下载地址
      actionRequestUrl:'www.xxxx.com/fileUpload'//请求服务器接口地址
      }},
     //执行相关的方法
     methods: {
     //打开导入弹窗
    openImporDialog() {
      this.dialogVisible = true;
    },
    //关闭弹窗
    handleClose() {
      this.dialogVisible = false;
    },
    //上传到服务器
    submitUpload() {
      console.log(this.fileList);
      if (this.fileList.length <= 0) {
        this.$message.error("请先选择需要上传的文件！");
        return false;
      }
      this.$refs.upload.submit();
    },
    //文件上传服务端失败时的钩子
    fileUploadFail: function(err, file, fileList) {
      console.log("文件上传失败", file, fileList);
    },
    //文件上传服务端成功时的钩子
    fileUploadSuccess: function(response, file, fileList) {
      console.log("上传成功");
      console.log(response);
      //清空已上传的文件列表
      this.$refs.upload.clearFiles();
      if (response.result) {
        this.dialogVisible = false;
        this.$message({
          message: response.message,
          type: "success"
        });
      } else {
        this.$message.error(response.message);
      }
    },
    //文件状态改变时的钩子，添加文件、上传成功和上传失败时都会被调用
    fileChange(file, fileList) {
      //解决无法判断el-upload是否上传过文件问题
      this.fileList = fileList;
      console.log("选择文件上传成功后显示的内容》", file, fileList);
    },
    //文件列表移除文件时的钩子
    handleRemove(file, fileList) {
      this.fileList = [];
      // return this.$confirm(`确定移除 ${file.name}？`);
    },
    //点击文件列表中已上传的文件时的钩子
    handlePreview(file) {
      console.log(file);
    },
    //导入模板下载
    downloadTemplate() {
      window.location.href =this.fileDownloadUrl+"/xxxExcel导入模板.xlsx";
    }
    }
</script>

using System;
using System.IO;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
namespace FileUploadManage.Controllers
{
    /// <summary>
    /// 图片，视频，音频，文档等相关文件通用上传服务类
    /// </summary>
    public class FileUploadController : Controller
    {
        private static IHostingEnvironment _hostingEnvironment;
        public FileUploadController(IHostingEnvironment hostingEnvironment)
        {
            _hostingEnvironment = hostingEnvironment;
        }
        /// <summary>
        /// Form表单之单文件上传
        /// </summary>
        /// <param name="formFile">form表单文件流信息</param>
        /// <returns></returns>
        public JsonResult FormSingleFileUpload(IFormFile formFile)
        {
            var currentDate = DateTime.Now;
            var webRootPath = _hostingEnvironment.WebRootPath;//>>>相当于HttpContext.Current.Server.MapPath("") 
            try
            {
                var filePath = $"/UploadFile/{currentDate:yyyyMMdd}/";
                //创建每日存储文件夹
                if (!Directory.Exists(webRootPath + filePath))
                {
                    Directory.CreateDirectory(webRootPath + filePath);
                }
                if (formFile != null)
                {
                    //文件后缀
                    var fileExtension = Path.GetExtension(formFile.FileName);//获取文件格式，拓展名
                    //判断文件大小
                    var fileSize = formFile.Length;
                    if (fileSize > 1024 * 1024 * 10) //10M TODO:(1mb=1024X1024b)
                    {
                        return new JsonResult(new { isSuccess = false, resultMsg = "上传的文件不能大于10M" });
                    }
                    //保存的文件名称(以名称和保存时间命名)
                    var saveName = formFile.FileName.Substring(0, formFile.FileName.LastIndexOf('.')) + "_" + currentDate.ToString("HHmmss") + fileExtension;
                    //文件保存
                    using (var fs = System.IO.File.Create(webRootPath + filePath + saveName))
                    {
                        formFile.CopyTo(fs);
                        fs.Flush();
                    }
                    //完整的文件路径
                    var completeFilePath = Path.Combine(filePath, saveName);
                    return new JsonResult(new { isSuccess = true, returnMsg = "上传成功", completeFilePath = completeFilePath });
                }
                else
                {
                    return new JsonResult(new { isSuccess = false, resultMsg = "上传失败，未检测上传的文件信息~" });
                }
            }
            catch (Exception ex)
            {
                return new JsonResult(new { isSuccess = false, resultMsg = "文件保存失败，异常信息为：" + ex.Message });
            }
        }
    }
}